diff options
Diffstat (limited to 'cfrontend/Cminorgenproof.v')
| -rw-r--r-- | cfrontend/Cminorgenproof.v | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/cfrontend/Cminorgenproof.v b/cfrontend/Cminorgenproof.v index f7256624..9de6b326 100644 --- a/cfrontend/Cminorgenproof.v +++ b/cfrontend/Cminorgenproof.v @@ -1459,11 +1459,13 @@ Proof. rewrite zeq_true. rewrite Int.sub_shifted. auto. inv H; inv H0; inv H1; TrivialExists. inv H0; try discriminate; inv H1; try discriminate. simpl in *. - destruct (Int.eq i0 Int.zero); inv H. TrivialExists. + destruct (Int.eq i0 Int.zero + || Int.eq i (Int.repr Int.min_signed) && Int.eq i0 Int.mone); inv H; TrivialExists. inv H0; try discriminate; inv H1; try discriminate. simpl in *. destruct (Int.eq i0 Int.zero); inv H. TrivialExists. inv H0; try discriminate; inv H1; try discriminate. simpl in *. - destruct (Int.eq i0 Int.zero); inv H. TrivialExists. + destruct (Int.eq i0 Int.zero + || Int.eq i (Int.repr Int.min_signed) && Int.eq i0 Int.mone); inv H; TrivialExists. inv H0; try discriminate; inv H1; try discriminate. simpl in *. destruct (Int.eq i0 Int.zero); inv H. TrivialExists. inv H; inv H0; inv H1; TrivialExists. |